Machine for forming fastenings



L. A. CASGRAIN.

MACHINE FOR FORMING FASTENINGS.

APPLICATION FILED JULY 3. I918.

Patented June 28, 1921..

2 SHEETSSHEET I.

L. A. CASGRAIN. MACHINE FOR FORMING FASTENINGS.

APPLICATION FILEb IULY'SI I918.

Patented June 28, 1921.

formed from stock other than wire.

NITED STATES PATENT OFFICE.

LOUIS A. CASGRAHW, OF BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MACHINE FOR FORMING FASTENINGS.

Specification of Letters Patent. Patented June 28, 1921 Application filed July 3, 1918. Serial No. 243,152.

To all whom it may concern Be it known that 1, Louis A. CAsGRAIN, a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in Machines for Forming Fastenings, of which the following descrlption, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to a new and improved method and apparatus for forming fastenings and has for its object the production of fastenings of uniform character and so shaped as to facilitate the proper insertion of the fastenings into work, for example, shoe stock.

Preferably the fastenings are formed from blanks having the form of a wire, and important features of the invention reside in an organization adapted to produce pointed fastenings and comprising means for swaging the end of a wire to reduce a transverse dimension of the wire at its end which constitutes the point of the completed fastening and means for operating the swaging means and for presenting the wire in operative relation to theswaging means. It is recognized, however, that the invention in some of its aspects is not restricted in its application to the production of fastenings from wire and thatthe fastening blanks mayAbe ccordingly the invention in another aspect contemplates swaging-the end of a fastening blank to form a point onthe end of the blank and then severing the blank from the fastening stock however constituted subsequently to the operation of the swaging means.

In theoperation of certain known 'machines employed to form fastenings, for example, the machine disclosed in the patent to Louis A. Casgrain, No. 669,023, granted on Feb. 26, 1901, the points of the fastening blanks are sometimes distorted or poorly formed so that the course taken by the fas-. tenings when inserted into work, for example, shoe stock cannot be predetermined with certainty, the fastenings being sometimes deflected from their true course to a degree such as to cause injury to the work into which the fastenings are inserted. A furrectify any malformation of the ,point of the blank in the preliminary pointing of the blank to the end that the proper insertion of the fastening may be assured. Preferably and as shown, the shaping means comprises a swaging device formed with a substantially conical depression for engaging the points of the fastening blanks and imparting to them a symmetrical form corresponding to the form of the depression in the swaging device.

The invention is designed to be employed in machines for making fastenings from stock of widely varying characteristics including relatively soft stock, for which reason the point end of a fastening blank might be deflected or blunted if the swaging device were operated to impinge too severely thereagainst or to exert a great or sustained pressure thereon. Accordingly, a still further feature of the invention resides in the provision of means for impelling the swaging device against the point end of the fastening blank with force tempered. t0 the quality of the stock from which the blank is formed and in such wise that the pressure of the swaging device on the point of the fastening blank is relieved instantly after the impact of the swaging device on the blank. Preferably, and as shown, the operating means'for the swaging device is such that said device is impelled against the point of the fastening blank with the force of its momentum only. The machine in which the invention is illustrated as embodied is designed to produce fastenings of different lengths and the supporting and operating means for the swaging device are so constructed and arranged as to cause the swaging device to be thrust against the point of a the fastening blank with a substantialy uniform force regardless of variation in the lengths of the fastenings. To aid in accomplishing such result, the guide for the swaging device is inclined toward the point of ing forming machines of other types. It is further recognized that the invention may be embodied in a mechanical construction differing substantialy from that illustrated in the drawings without departing from the principles of the invention. It is therefore intended that the scope of the claims shall be limited only as necessarily required by the prior art.

Other objects and features of the invention pertain to various details of construc'-' tion and combinations of parts and will appear as the description proceeds.

In the drawings:

Figure 1 is a view in side elevation of the head of a fastening forming and inserting machine embodying the invention. 1

Fig. 2 is a front view of the same partly in section;

' Fig. 3 is a view illustrating the means for forming fastenings and the means for shaping the point ends of the fastenings in the positions which they occupy relatively to the means for presenting the fastening stock thereto prior to the operation of the shap- 1n means;

ig. 4 is a View similar to Fig. 3 but showing the arrangement of the parts subsequently to the operation of the shaping means;

Fig. 5 shows the wire guide and the former with the wire projected from the wire guide in position to be engaged by the former;

Fig. 6 illustrates the manner of operation of the swaging device on the wire;

Fig. 7- is a like view showing. the shape of the end of the wire after the operation of the swaging device thereon;

Fig. 8 is a viewshowing in two different positions a fastening produced by the fastening forming machine without the use of the invention;

' Fig.9 is a detail view of the bar which controls the operation of the swaging device, and

Fig. 10 portrays diagrammatically the I cam which governs the movement of the bar.

The invention will be described, by way of example, as applied to a fastening forming and inserting machine of the type disclosed in the patent to CasgraillfibOVe cited and the patent to Casgrain No. 1,048,134, granted December 24, 1912.

Such machine comprises a head 2 in which is journaled the driving shaft 4 to which rotation is imparted by the pulley 6. The machine is designed to form fastenings from a wire A which is conducted from a reel 8 by feeding devices indicated generally at 10 through a wire guide 12 to the point of formation of the fastenings. The mechanism by which the fastenings are made comprises a swinging carrier 14 pivotally sup ported from the head 2 of the machine and having mounted thereon the cutter 16 for severing fastening blanks from the wire A, the former 18 for forming fastenings of the desired character from the blanks, and the driver 20 for inserting the fastenings into the work. The former 18 comprises the shaper 22 and the bender 24, and the wire guide 12 is grooved so as to present a fixed cutting edge 26 against which the wire is severed by the movable cutter 16 and is further constructed to provide an anvil 28 against which the shaper 22 and bender 24 operate to complete the formation of the fastening. The carrier 14 also has mounted thereon an awl 30, Fig. 1 which makes an opening in the work to receive the fastening inserted by the driver 20. The carrier 14 is oscillated by suitable means (not shown) to aline the awl 30 and driver 20 alternately with the tip 32 of the horn 34 by which the work is supported. The parts hereinbefore referred to are fully set forth in Patent No.1,048,134 to which reference may be made for a complete description of parts not fully described herein.

In accordance with the principles of this invention, and to produce pointed fastenings, I have provided means operable to reduce a transverse dimension of the point end of the fastening blank. Preferably, and as shown, said means is constructed and arranged to operate on the fastening blank prior to its severance from the fastening stock. Said means comprises a swaging device 38 formed at its end with a substantially conicaldepression 40 arranged to en gage circumferentially the end of the blank. The operating means for the swaging device 38 comprises a spring 42 seated in the bore 44 of the guide 46 which in turn is secured to the main head 2 of the machine by a bolt or the like 48. The bore 44 extends substantially from end to end of the guide 46 and has slidably mounted therein the head 50 of the swaging device 38. The head 50 of the swaging device comprises a split externally threaded socket 52 which receives one end of the swaging device 38 and is clamped fixedly upon the end of the swaging device by an internally threaded gripring 54. The socket 52 and ring 54 are preferably formed on their ex e iors th flattened portions to facilitate the assembling and disassembling of the parts. The spring 42 is seated within a barrel 56 slidably mounted in the bore 44 of the guide 46 and operates normally to maintain the closed end of the barrel in contact with the head 50 of the swaging device 38.

Theswaging device 38 is normally maintained in inoperative position against the impulse of the spring 42 by a trigger 58 engaging a notch 60 in the head 50 of the swaging device, a spring 62 being secured to an arm of the trigger 58 and bearing against the guide 46 in such manner as to press the finger 64 of the trigger into the notch 60 of the swaging device.

Means are provided for withdrawlng the finger 64 of the trigger 58 from the notch 60 thus to control the operation of the swaging device 38 by the spring 42. As shown said controlling means comprises a finger 66 extending laterally from a bar 68, (see Fig. 9) pivoted to' a bell crank lever 70 fulcrumed on a bracket 72 secured on the main head 2 of the machine. The bar 68 is operated in a direction to disengage the trigger 358 from the head of the swaging device by a sprin 74 and in the opposite direction by acam 6 carried by the main shaft 4 and operated in timed relation with the other parts of the machine.

Upon the disengagement of the trigger 58 from the head 50 of the swaging device 38, the spring 42 impels the swaging'device against the blank. Means are provided for returning the swaging device against the resistance of the spring 42 which, as shown, comprises a block 77 carried by an extension 78 of the bar 68 which operates the controlling finger 66 for the trigger 58. From the foregoing, it will be seen that, when the block 77 is moved in a direction to return the swaging device 38 to inoperative position against the resistance of the spring 42,

- is moved out of operative relation with the head 50 of the swaging device thus allowing the device tomove under the impulse of the spring 42 when relieved from the restraint imposed by the trigger 58. By reference to Fig. 4, it will be clear that the block 77 operates also to limit the movement of the swaging device 38 in the bore 44 of the guide 46. Although the means for reducing the point end of the fastening'blank is herein illustrated as a swaging device operating by impact against the blank, it is to be under t od th t such means may have various embodiments differing materially in mechanical construction from that herein illustrated without departing from the principles of the invention as defined by the appended claims.

The movable cutter 16 and the fixed cutting edge 26 are constructed to sever the wire as indicated by the broken line (see Fig. 3) and thus form a point on the wire which constitutes the point of the succeeding fastening. In the operation of the machine, as clearly set forth in the above-mentioned patents, the cutter 16 engages the portion of the wire above the level of the fixed cutting edge 26 and forces it away from that portion of the wire which lies in the groove of the wire guide 12 below the level of the fixed cutting edge 26. The forcing of the upper portion of the wire engaged by the'movable cutter 16 away from the lower portion of the wire engaged by the fixed cutting edge 26 results in the lower portionof the wire being pulled or crowded in the direction in which the upper portion of the wire is moved by the cutter 16. The point of the wire below the fixed cutting edge 26 is consequently formed with a slight bevel on the side of the wire which is first engaged by the movable cutter 16. This bevel appears at the point of the completed fastening a as indicated at b in Fig. 8. It

sometimes happens, moreover, that thepoint of the wire is formed with a slight projection or fin which appears on the completed fastening as indicated at c, Fig. 8. Such distortion of the point of the fastening is undesirable under some conditions in that the fastening when driven into work, for example shoe stock, is likely thereby to be deflected from its true course with consequent injury to the work. The present construction enables me to shape the points of the fastenings symmetrically and thus to avoid the difliculties sometimes previously encountered in the insertion of fastenings.

The wire is fed forwardly subsequently to the severance of a fastening blank therefrom and is thereby presented in position for the operation of the former 18 and swaging device 38 thereon. The swaging device is so arranged and timed that it is impinged against the point of the wire prior to the operation of the former 18 on the wire. By

reference to Fig. 6. it will be noted that the inclined Walls of the depression 40 of such device bevel the point of the wire and consequently the point of the fastening next severed therefrom substantially equally on opposite sides of such point and also remove any fin which may have been formed on the point of the wire in the severance of the preceding blank. From the foregoing, it will be understood that the effect of the impact of the swaging device 38 on the end of the wire is to reduce the wire at its end quick-ly'relieved to insure that the point of the wire will not be deflected or blunted A to an excessive degree by the swaging device. In the. illustrated construction, the force of the blow is tempered, and the pressure of the swaging device on the point of the wire is instantly relieved by causing the swaging device to impinge upon the point of the wire with the force of its momentum only. To this end a rod 80 is connected to the closed end of the barrel 56 and has on its end a head 82 which engages a set nut 84 at a time prior to the engagement of the swaging device 38 with the point of the wire so that the pressure of the spring 42 von the swaging device is relieved prior to the impact of the swaging device on the point of the wire. The force of the blow may, if desired, be regulated by the provision of suitable means (not shown) for adjusting the tension of the spring 42, or by the substitution one for another of springs of various degrees of compression.

The machine in' which the invention is illustrated as embodied is adapted to produce fastenings of varying lengths determined by the extent to which the wire A is projected beyond the front face of the wire guide 12 by the feeding devices 10, and the farther the wire is projected from the face of the wire guide the longer will be the fastening formed therefrom and'the earlier in its movement will the swaging device 38 engage the point of the wire, inasmuch as the distance between the face} of the wire guide and the guide 46 for the swaging device is constant. To the end that .the points of the fastenings may be shaped uniformly regardless of variation in the lengths of the fastenings, the head 82of the rod 80 is arranged so as to discontinue the movement of the barrel 56 under the action of-the spring 42 prior to the impact of the swaging device 38 on the point of the wire when the wire is projected to an :extent to form the longest fastening which the machine is designed to produce and the wire guide 46 is inclined toward the point of the wire so that the force of gravity tends to move the swaging device in the guide 46 toward the point of the wire, thus counteracting the resistance imposed by the friction of the parts tothe movement of the swaging device in its guide. From the foregoing it will be understood 32 of the horn-34, the awl 30 is first forced downward to penetrate the work, the wire meanwhile being fed through the wire guide 12 so as to project beyond the face of the wire guide by a distance determined by the length of the fastening which it is desired to form from the'wire. The parts are then in the relative positions illustrated in 2 of the drawings, the cam roll 86 of the lever 70 riding on the rest portion 88 of the cam 7 6-which controls the operation of the swaging device 38 through said lever. Continued rotation of the cam 76 in the direction of the arrow (see Fig. 10) brings the depressed portion 90 of the cam 76 into register with the cam roll 86 of the lever 70 thereby permitting the spring 74 tog draw the lower. end of the lever 70 inwardly to engage the finger 66 with the trigger 58 to remove the finger 64 of the trigger from the notch 60 in the head 50 of the swaging device, whereupon the swaging device is forced against the point of'the wire under the impulse of the spring 42. The cam 76 has a rise portion 92 adjacent to the depressed portion 90 which, upon 1 continued rotation of the cam 76, moves the lower portionof the lever 70 and the finger 66 and block 77 operated thereby to the right (see Fig.2) a ainst the resistance of the spring 74 to wit draw the finger 66 from engagement with the trigger 58 and to bring the block 77 into engagement with the head 50 of the swaging device 38 to return the swaging device to inoperative position, in which position it is retained by the engagement of the finger 64 of the trigger 58 in the notch 60 of the head of the swaging device.

Simultaneously with the return of the swaging device 38 to inoperative position by the block 77, the foriner 18 which comprises the shaper 22 and the bender 24 is lowered to thrust the shaper 22 against the projecting end of the wire and bend the end of the wire downwardly against the front face of the wire guide 12. After the withdrawal of the awl from the work, the carrier 14 is moved forwardly by means (not shown) carrying the cutter 16 against the wire so as to sever the wire against the fixed cutting edge 26 of the wire guide 12. The fastening blank thus formed is carried forwardly by the movement of the carrier 14 to a position such that the upper end of the blank overhangs the anvil 28 of the wire guide. The former 18 is then again moved downwardly and the bender 24 forced against the overhanging end of the blank resulting in the complete formation of the fastening. After the former 18 has been moved downwardly to the limit of such movement and the fastening thus completed, it is again moved'forwardly by continued operation of the carrier 14 to push the fastening off the anvil whereupon the driver 20 is forced downward to insert the fastening into the work. The carrier 14 is then withdrawn to aline the awl 30 with the tip 32 of the horn, the wire is fed so as again to project from the face of the wire guide and the awl is forced into the work as before. Meanwhile the continued rotation of the cam 76 brings the drop portion 94 of the cam into register with the cam roll 86 of the lever 7 O permitting the spring 7 4 to move the lower end of the lever 7 O inwardly, thus moving the block 77 out of operative relation with the head 50 of the swaging device and moving the finger 66 to a position adjacent the trigger 58, (see Fig. 2).

Having described my invention, what I claim as new and desire tosecure by Letters .Patent of the United States is:

l. The method of forming fastenings which comprises alternately swaging the end of the fastening stock to reduce a transverse dimension of the stock at its end, and then severing a fastening from the stock, the point of each fastening being constituted by the swaged end of the stock.

2. The method of making fastenings which comprises forming a point on a fastening blank and then reshaping said point and imparting an axially symmetrical form thereto.

3. The method of forming fastenings which comprises alternately severing a fastening from the end of a piece of fastening stock and then reshaping the end of the piece of stock and imparting an axially symmetrical form thereto.

4. The. method of forming fastenings which comprise swaging the end of a piece of fastening stock so as to form an axially symmetrical point thereon and then severing a fastening from the stock, the point of the fastening being constituted by the swaged end of the stock.

-5. The method of forming fastenings from wire-which comprises severing a fastening blank from the wire in such a manner as and shaping the point of the stock intermediate between the severance of consecutive blanks to impart a substantially symmetrical form to the points of the blanks.

7. Mechanism for producing pointed fastenings from wire comprising means for swaging the end of a wire, means for presenting the wire in operative relation to the swaging means, and means for severing afastening blank from the wire subsequently to the operation of the swaging means.

8. Mechanism for producing pointed fastenings from wire comprising means for swaging the end of a wire adapted to be converted into a plurality of fastenings thereby to reduce a transverse dimension of the wire at its end, and means foroperating the swaging means to shape the end of the Wire uniformly regardless of variation in the lengths of the fastenings severed therefrom.

9. Mechanism for producing pointed fastenings comprising means for swaging the end of a fastening blank to reduce a transverse dimension of the blank at its end, means for presenting the blank in operative relation to the swaging means, and means for severing the blank from the fastening stock subsequently to the operation of the.

swagln means.

10. echanism for producing pointed fastenings from wire comprising means for swaging the end of a wire adapted to be converted into a plurality of fastenings thereby to reduce a. transverse dimension of the wire at its end, means for operating the swaging means toward and from. the end of the Wire and means for presenting the Wire in operative relation to the swagmg means.

11. Mechanism for producing pointed fastenings from wire comprising means for severing a wire, means for feeding the wire, and means for swaging the end of the wire endwise subsequently to the feeding of the wire to reduce a transverse dimension of the end of the wire.

12. In a machine of the class described, means for severing a fastening blank from a wire constructed to form a point on the succeeding blank, and means for shaping the point of the succeeding blank to remove irregularities therefrom.

13. In a machine of the class described,

means for pointing a fastening blank, means for swaging the point of the blank subsequently to the operation of the point forming means, and meansfor severing the blank from the fastening stock subsequently to the operation of the swaging means.

14. In a machine of the class described, a wire guide, means for feeding a wire through said guide, means for pointing the end of the wire, andmeans arranged to enage the point of the wire circumferentially or shaping said point.

15. In a machine of the class described, a

wire guide, means for pointing the end of a wire in the guide, and means for reshaping the point formed on the end of the wire arranged to make said point axially symmetrical.

16. Mechanism for producing pointed fastenings from wire comprising means for of the Wire to make axially symmetrical the point thereof.

17. In a machine of the class described, means for pointing the end of a wire, means for severing fastening blanks of varying lengths from the wire, means for shaping the point of the Wire comprising swaging means, and. means for operating the swaging means 'to shape'the point of the wire uniformly regardless of variation in the lengths of the fastening blanks severed from the Wire.

18. In a machine of the class described, a wire guide formed to present a cutting edge, a movable cutter operating to sever the wire by forcin itagainst said cutting edge,said cutter an said cutting edge being construct ed and arranged to form a point upon the wire, and means for shaping the point of the Wire.

19. In amachine of the class described, a wire guide formed to present a fixed cutting edge, a movable cutter operating to sever the wire by forcing the wire against said cutting edge, said cutter and said cutting edgebeing constructed and arranged to form a point on the Wire, means for feedin the wire, and means for swaging the point of the wire subsequently to the feedmg of the Wire.

20. In a machine of theclass described, means for pointing a fastening blank, means for shaping the point of the blank subsequently to the operation of the point forming means to impart an axially symmetrical form to the point of the blank, and means for forming the blank into a fastening.

21. In a machine of the class described, means for swaging the point end of a fastening blank, and means for impelling the swaging means'against the blank constructed to relieve ,the pressureof the swaging means on the blank instantly after the impact of the-swaging means on the blank.

22. In a machine of the clam described, means for shaping the point of a wire, a guide for the wire formed to present a fixed cutting edge, a movable cutter operable to sever a fastening blank from 'the'wire byforcing the wire against the fixed cutting edge, said cutter and said cutting edge being constructed and arranged to point the end of the Wire thus to form the point of the next succeeding blank upon the severance of a blank from the wire.

23. In a machine of the class described, means for swaging the point end of a fastening blank comprising a member formed with a substantially conical depression ar ranged to engage the end of the blank and means for presenting the blank in operative relation to the swaging means.

24:. In a machine of the class described, means for swaging the end of a wire comprising a. member formed with a substantially conical depression arranged to engage the end of the wire, and means for presenting the Wire in operative relation to the swaging means.

25. In a machine of the class described. means forpointing a fastening blank and means for swaging the point of the blank comprising a member formed with a conical depression arranged to engage the point of the blank. a

26. In a machine of the class described. means for shapin a fastening blank and means for impel mg the shaping means against the'blank with the force of its mo-- .mentum only.

27. In a machine of the class described, means for swaging the point end of a fastening blank and means for impelling the swaging means against the blank with the force of its momentum only.

28. In a machine of the class described, means for swagingthe. point end of a fastening blank comprising a member formed with a conical depression arranged to engage the end of the blank and means for impelling the swaging means against the blank with the force of its. momentum only.

29. In a machine of the class described, means for severing fastening blanks of varying lengths from stock, means for swaging the point ends of the blanks comprising a member formed with a conical depression arranged to engage the ends of the blanks,

and means for impelling the swaging means against the blanks with substantially constant force regardless of variation in the lengths of the blanks.

30. In a machine of the class described, means for pointing a fastening blank, means for swaging the point of the blank comprising a member formed with a conical depression arranged to engage the point of the blank, means for impelling said member toward the blank, and means for relieving said member from the force of said impelling means prior to the impact of said member on the blank so that said member is thrust against the blank with the force of its momentum only. I

31. In amachine of the class described, a swaging device, means for operating the swaging device, means for relieving the swaging device from the force exerted thereon by said operating means, and guiding means for the swaging device constructed to permit movement of the swaging device beyond that point of its movement at which the swaging device is relieved from the force exerted thereon by its operating means.

32. In a machine of the class described, a swaging device, means for operating the swaging device, means for limiting the movement of the swaging device, and means for rendering the operating means inoperative on the swaging device prior to the effective operation of the limiting means to discontinue the movement of the swaging device so that the swaging device is moved during the latter part of its movement by the force of its momentum only.

33. In a machine of the class described, a swaging device, means for operating the swaging device, means for limiting the movement of the swaging device, means for rendering the operating means inoperative on the swaging device prior to the effective operation of the limiting means to discontinue the movement of the swaging device so that the swaging device is moved during the latter part of its movement by the force of its momentum only, and means for operating said limiting means to return the swaging device to inoperative position.

34. In a machine of the class described, a swaging device, means for operating the swaging device, means for returning the swaging device to inoperative position, means for normallv retaining the swaging device in inoperative position, and vmeans movable with the swaging device returning means for controlling the operation of the swaging device by the operating means.

35. In a machine of the class described, a swaging device, means tending to operate the swaging device, a head connected to the swaging device, a guide for the swaging device, a trigger carried by the guide and engaging said head to retain the swa ing de-' vice in inoperative position against t e force exerted thereon by the operating means, means acting against said head for returning the swaging device to inoperative position, means for moving the returning means out of operative relation to means connected to and movable with said returning means for moving the trigger out of engagement with the head after movement of the returning means out of operative relation to the head.

36. In a machine of the class described, a swaging device, means for operating the swaging device, means for returning the swaging device to inoperative position, means for moving the returning means out of operative relation to the swaging device, means for controlling the operation of the swaging device by the operating means, and means for actuating said controlling means to render said operating means operative on the swaging device after movement of the said head, and

returning means out of operative relation to the swaging device.

37. In a machine of the class described, a swaging device comprising a head having a notch formed therein, means normally operative to retain the swaging device in inoperative position by engagement with said notch, means for automatically presenting work in position to be swaged, and means operated in timed relation with the presenting means for Withdrawing the retaining device from said notch to render said swaging device operative.

38. In a machine of the class described, a swaging device, a spring for operating the swaging device, means for relieving said swaging device from the force exerted thereon by said spring, and guiding means for the swaging device constructed to permit movement of the swaging device beyond the point of its movement at which the swaging device is relieved from the impulse of the.

spring so that the swaging device is moved during the latter part of its movement by the force of its momentum only.

39. In a machine of the class described, a swaging device, a head connected to the swaging device, guiding means for said head, a spring pressed member carried by said guiding means and arranged to engage said head and operate the swaging device,

means for limiting the movement of said spring pressed member to an extent less than the movement of the head in the guiding means, means acting in opposition to said spring pressed member to return the swaging device to inoperative position, means 0perable on said head to retain the swaging device normally in inoperative position against the force exerted thereon by said spring pressed member, means for moving the swaging device returning means out of operative relation to the swaging device, and means operable after such movement of the returning means to render said spring pressed member operative on'the swaging device.

40. In a machine of the class described, a swaging device, a spring for operating the swaging device, means for returning the swaging device to inoperative position, means normally operative to retain the swaging device in inoperative position against the impulse of the spring, and means operating in timed relation to said returning means for releasing the swaging device from said retaining means.

41. In a machine of the class described, a swaging device, a spring for operating the swaging device, a member for returning the swaging device to inoperative position, means normally operative to retain the swaging device in inoperative position against the impulse of the spring, a member for releasing the swaging device from the restraint of said retaining means, and common operating means for said members.

42. In a machine of the class described, means for severing a fastening from a wire constructed to form a point on the wire and means for shaping the point ofthe wire movable endwise of the wire as it shapes said point..

43. In a machine of the class described, means for severing a fastening from a Wire constructed to form a point on the Wire and an integral member for shaping the point of the wire movable endwise of the wire as it shapes said point.

44. In a machine of the class described, means'for severing a fastening from a wire constructed to form a point on the wire, and means arranged to engage the wire circumferentially of said olnt for reshaping the point to make it axially s mmetrical.

In testimony whereof I have signed my name to this specification.

LOUIS A. CASGRAIN. 

